World wastewater treatment plant observatory · data as reported by each inventory

Wastewater treatment plants in the United States

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14,626 inventory records · HydroWASTE v1.0 / United States

Data years: 2008, 2012. The inventory date does not establish current operation.

States

14,626 results

CompareNameNative sizeYear
Hyperion WWTPHW:259544,325,314 population served2012
Joint WPCPHW:259433,530,120 population served2012
OCSD WWTP No 2HW:262273,484,265 population served2012
Sacramento Regional WWTFHW:259742,809,116 population served2012
DETROIT STPHW:309672,359,691 population served2012
Stickney Treatment Plant MWRDGCHW:277872,238,754 population served2012
BLUE PLAINS STPHW:266382,177,897 population served2012
Point Loma WWTFHW:262512,066,532 population served2012
ALCOSAN STP ALLEGHENY COUNTYHW:367091,865,470 population served2012
New York C Newtown Creek WPCPHW:335761,761,012 population served2012
Phoenix 91st Ave WWTPHW:253261,757,478 population served2012
Mass Water Resources AuthorityHW:307511,693,303 population served2012
METROPOLITAN TPHW:312071,676,695 population served2012
Metro Wastewater Reclamation District Robert W Hite WWTFHW:262951,557,142 population served2012
San Jose_Santa Clara WPCPHW:258521,546,938 population served2012
OCSD WRP No 1HW:262261,443,610 population served2012
Passaic Valley Sewerage Commision CS_CSO_STPHW:332501,438,279 population served2012
WEST POINT WWTPHW:386081,381,812 population served2012
PHILADELPHIA WATER DEPT SWHW:362531,291,651 population served2012
PHILADELPHIA WATER DEPT NEHW:362521,257,517 population served2012
NORTHSIDE WATER RECLAMATION PLANTHW:277911,242,722 population served2012
New York C Wards Island WPCPHW:335661,210,058 population served2012
Central WWTP TRAHW:375641,205,121 population served2012
CALUMET WRPHW:277931,139,238 population served2012
Dos Rios WWTPHW:380481,133,673 population served2012
MDWASD Central District WWTFHW:266661,120,906 population served2012
MILWAUKEE MSD COMBINEDHW:393331,114,952 population served2012
VILLAGE CREEK STPHW:378521,104,531 population served2012
DC Tillman WRPHW:259571,100,000 population served2012
New York C Bowery Bay WPCPHW:335681,031,661 population served2012
San Jose Creek WRPHW:259451,000,000 population served2012
BACK RIVER WWTPHW:30523998,745 population served2012
Central WWTP DallasHW:37826980,256 population served2012
Clark County Water Rec Dist AWTHW:33152964,400 population served2012
SOUTH RIVER WWTPHW:27015962,059 population served2012
Southeast WPCPHW:25843949,125 population served2012
Fresno Clovis Regional WRFHW:26007940,220 population served2012
LAS VEGAS AWTHW:33119883,000 population served2012
New York C North River WPCPHW:33577849,776 population served2012
MDWASD South District WWTPHW:26669840,500 population served2012
Puerto Nuevo Bayamon WWTPHW:39745832,499 population served2012
MDWASD North District WWTPHW:26668832,294 population served2012
69th Street PlantHW:37999831,335 population served2012
Middlesex County UA CS_STPHW:33286822,541 population served2012
New York C Hunts Point WPCPHW:33567809,569 population served2012
New York C Owls Head WPCPHW:33575797,607 population served2012
King County South Treatment PlantHW:38607787,449 population served2012
East Bay MUD Main WWTPHW:25848781,359 population served2012
New York C Jamaica WPCPHW:33570767,723 population served2012
Joint Meeting of Essex and Union CSO_STPHW:33244758,488 population served2012
COLUMBIA BLVD STPHW:36035721,420 population served2012
Indianapolis BELMONT WWTPHW:28008707,569 population served2012
Bergen County UA Little Ferry WPCF CS_CSO_STPHW:33243698,664 population served2012
BROWARD CNTY N DIST REGHW:26639679,994 population served2012
DES MOINES METRO WRA WWTPHW:28622662,376 population served2012
NEORSD Southerly WWTPHW:35050607,312 population served2012
Brightwater Treatment PlantHW:38609596,885 population served2012
New York C Coney Island WPCPHW:33574596,326 population served2012
Southside WWTP DallasHW:37827590,000 population served2012
Central Contra Costa WWTFHW:25840582,896 population served2012
LEMAY WWTPHW:31742574,338 population served2012
BISSELL POINT WWTPHW:31741559,471 population served2012
Columbus Southerly WWTP and SewersHW:35057552,865 population served2012
NCSD 3 Cedar Creek STPHW:33532550,650 population served2012
MSD MORRIS FORMAN STPHW:29852550,000 population served2012
ALBUQ COLL SYSTEMHW:33412545,852 population served2012
VIRGINIA INITIATIVE PLANTHW:38489538,646 population served2012
NCSD 2 Bay Park STPHW:33531527,234 population served2012
BuffaloSewer AuthBird Island STPHW:34084512,985 population served2012
Nassau Co Sewer and Stormwater AutHW:33533508,000 population served2012
Tucson Water Reclaimed Water Distribution SystemHW:25398498,648 population served2012
Camden County MUA CS CSO_WWTPHW:33345495,191 population served2012
Columbus Jackson Pike WWTP and SewersHW:35056487,474 population served2012
Monroe Co Frank E Van Lare STPHW:33986485,867 population served2012
WILMINGTON STPHW:26637480,797 population served2012
IEUA Regional Plant No1HW:26215479,792 population served2012
Westchester Co Yonkers Joint STPHW:33697479,197 population served2012
R M CLAYTON WPCPHW:27016471,635 population served2012
Atlantic County UA WWTF CS_STPHW:33325467,506 population served2012
Patapsco WWTPHW:30524462,012 population served2012
New York C Tallman Island WPCPHW:33569450,412 population served2012
WALNUT CREEK STPHW:37742440,720 population served2012
JACKSON POTW SAVANNA STREETHW:31514436,315 population served2012
KC BLUE RIVER STPHW:31720433,096 population served2012
Memphis N Maynard C Stiles STPHW:37453432,450 population served2012
Riverside Regional WQCPHW:26209431,519 population served2012
NEUSE RIVER REGIONAL WWTPHW:34412429,283 population served2012
MSD Mill Creek Drainage BasinHW:35164428,050 population served2012
SAND ISLAND WWTPHW:27344418,655 population served2012
ALBUQUERQUE 2 PLANTHW:33413410,111 population served2012
SOUTH AUSTIN REGIONAL STPHW:37743402,500 population served2012
Suffolk Co SCSD 3 SOUTHWESTHW:33545400,100 population served2012
Nashville Central WWTPHW:37468395,402 population served2012
OKC NORTH CANADIAN WWTHW:35659394,724 population served2012
IBWC Nogales International WTPHW:25376388,120 population served2012
New York C Rockaway WPCPHW:33579387,474 population served2012
Howard F Curren AWTPHW:26697375,000 population served2012
Delta Diablo Sanitation Dist WWTFHW:25838374,054 population served2012
MRWCPA WWTFHW:25891373,273 population served2012
Los Coyotes WRPHW:25947370,000 population served2012

Regulatory context

General reference. This is not an exhaustive review of applicable law.

United States: Clean Water Act / NPDES

NPDES regulates pollutant discharges from point sources to waters of the United States. The permit sets limits and monitoring conditions. A CWNS code identifies an inventory record, not an NPDES permit.

  • Permit identifier and permitting authority: EPA or an authorized state.
  • Outfall and receiving water; sewer connections follow a different control route.
  • Current permit conditions, limits and dated measurements; these are not included in CWNS.

References reviewed: 2026-11-06. Individual applicability: undetermined. This profile does not establish authorization or compliance.